Solder wiper for can body makers



Dec. 16, 1947. V F, J. O'BRIEN, .13., E'FAL 2,432,788

' SOLDER WIPER'FOR CAN BODY MAKERS Filed July 24, 1944 Patented Dec. 16, 1947 UNITED QFF QE was. soLoER WEBER non can some amas Syracu e N Y Company, Inc, of New York' .112, and Hans gehrmann ass ignors to Continental Ca'n la t. 8?; -iiafe aa Arn e-then lair it erial iridt? a wiper roll with a scraper rotating about the periphery of the Wiper roll in Contact therewith and in a direction opposite to the rotation of'the wiper roll.

These and other objects will in part be obvious and will in part be hereinafter more fullydis closed.

In the drawings: Figure 1 is a view partly in section and partly in side elevation showing a can seaming wiping mechanism with the improved means for removing the solder clinging thereto;

Figure 2 is a sectional view on the line 2-2 of Figure 1.

It is a common practice to provide a wiper roll A in conjunction with a' soldering mechanism which wiper roll contacts with the solder hdnded side seam for removingsol'der adhering tothe outer face of the can body in the region adjacent the side seam. Such a wiper roll is particularly necessary in connection with a Jensen type of solder applying mechanism wherein a solder roll rotating in a bath of solder is so positioned relative to the path of travel of the can bodies that the can body in the region of the side seam receives solder from the roll. While much of the solder is sweated into the side seam, solder does, however, adhere to the can body in the region adjacent the side seam, and the purpose of the wiper roll is to remove this solder adhering to the can body.

The wiper roll is usually made of layers of fiber material and the periphery of the roll is shaped to conform to the curvature of the can body. The Wiper roll is so disposed relative to the solder horse alon which the can bodies pass after leaving the soldering mechanism as to contact with the side seam of the can body. The solder horse has a slot at the lower side thereof so that the side seam can be presented to the soldering mechanism and also to the wiper roll. This wiper roll and its mode of operation is of the usual type. Cooperating with this wiper roll is a scraper which is mounted for movement about the axis of rotation of the wiper roll. The 55 team pa e 2. scrap-er i shaped. t q a f' rm o. he p riphery of h rbli ahras se tarian tdnfie lw the periphery at all" times. It is" rotatedebput the Wi l nd m res in. a di et qe e es to the: irec ion of. w mer the r ve 1 n matinee? he i are tha 3 s i i v d wi h s ljlals which engage the can i through the horse.

t e Wi e r a? general to the cylindrical shape of the can body. Associated with the wiper roll is a scraper 8. Said scraper contacts with the periphery of the wiper roll. The under face 9 of the scraper 8 is curved so as to conform generally to the curvature of the wiper roll 5. This scraper 8 is carried by a supporting shank l0 mounted in a bracket arm ll so that it can be moved out and in on said arms. The section of the horse at the left as viewed in Figure 2 is cut away at l2 so as to provide a clearance for the movement of the scraper as it travels about the wiper roll, The arm II in which the scraper shank is mounted is bolted to a sprocket wheel l3 by suitable bolts 14 and the sprocket wheel and bracket arm are rotatably mounted on a supporting stud l5. A threaded collar l6 retains the sprocket wheel and arm on the stud. This stud I5 is carried by a supporting bracket 1 I which is provided with slots l8, [B through which the bolts I9, I9 pass for clamping the same to the frame 20 of the machine. These slots l8 are elongated and permit a limited endwise adjustment of the bracket on the frame which facilitates the positioning of the scraper laterally of the rotating wiper roll 5.

Mounted on the supporting arm H is a lever 2 I. Said lever is pivoted at 22 to a lug 23 carried by the under side of the arm II. The outer end of the lever 21 is provided with a. slot 24 in which a pin 25 carried at the lower end of the shank ID is located. The other end of the lever 2| is provided with a ball stud 26 engaging the groove 21 in a collar 28 mounted on the outer end of a shaft 29. This shaft 29 extends through a threaded opening in the stud I and has threaded connection therewith. Mounted on the outer end of the shaft 29 is a hand knob 30 by which the shaft may be rotated. The shaft is secured in set positions by means of a lock nut 3|.

A sprocket chain 32 runs over the sprocket wheel I3 and causes the arm H to rotate about the axis of the stud l5 and this axis of the stud I5 is in alignment with the axis of rotation of the wiper roll. The scraper is set so as to contact with light pressure against the periphery of the fiber wiper roll. As the roll wears the shaft 29 can be adjusted so as t6" maintain a proper engagement between the scraper and the wiper roll.

The timing of the rotations of the scraper about the periphery of the wiper roll is synchronized with the movements of the can bodies so that the scraper passes over the top of the wiper roll between the passing of the can bodies. In Figure 1 there is indicated in dotted lines two can bodies C and C. These can bodies are spaced and the scraper passes over the top of the wiper roll in this spacing between the two can bodies. As has already been noted, the wiper roll rotates in a clockwise direction and the scraper rotates in a counter-clockwise direction. The under face of the scraper is shaped so as to provide more or less of a blunt edge, as indicated at 9 in Figure 1 of the drawings.

The wiper roll contacting with the outer face of the can body in the region where solder has been applied thereto, will remove the greater portion of the solder from this outer surface of the can. Some of the solder will form into pellets which do not travel around with the wiper, but bounce around on the upper portion thereof. The scraper will remove these pellets so that they will not be scooped up by the oncoming can body. Some of the solder will cling to the wiping roll and some of the pellets will be carried around with the wiping roll and will be thrown from the wiping roll into the path of the oncoming body. The scraper, however, will remove the greater portion of this solder accumulating on the wiper roll so that little or no solder will be picked up by the oncoming can body.

It is obvious that many changes may be made in the details of construction without departing from the spirit of the invention as set forth in the appended claim. It is essential, however, that the scraper shall contact with the periphery of the Wiper roll and move about the same in a direction opposed to the direction of the wiper roll.

We claim:

The combination of a solder horse, a conveying means for moving can bodies along the horse in spaced relation, a wiper roll contacting with the can bodies in the region of the side seam thereof for removing surplus solder therefrom, means for rotating the wiper roll in a direction opposed to the direction of movement of the can bodies, a scraper extending laterally across the peripheral face of the Wiper roll and shaped to conform with said face, said scraper being positioned so as to contact with the peripheral face of the wiper roll, means for rotating the scraper about an axis in alignment with the axis of the wiper roll and in a direction opposed to the direction of rotation of the wiper roll whereby the scraper will contact with the entire periphery of the roll for removing solder accumulating thereon, said rotating means for the scraper being timed so as to move over the high point of the wiper roll at a time when the wiper roll is out of contact with the passing can bodies.

FRANK J. OBRIEN, JR. HANS GEHRMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,508,077 Taylor Sept, 9, 1924 2,161,839 Woolford June 13, 1939 

